Chapter 1 Geometry Vocabulary

set of all points

undefined term; straight path that extends in two opposite directions without end and has no thickness

Points that lie on the same line

part of a line that consists of two points called endpoints and all points between them

Undefined term; refers to a specific location in space but has no size

collinear rays with the same endpoint; they form a line

part of a line that consists of one endpoint and all the points of the line on one side of the endpoint

the set of points the figures have in common

undefined term; flat surface that tends without end and has no thickness. It contains infinitely numbers of lines

figures that are in the same plane